Another important religious building and destination for many visitors is undoubtedly the monumental former Dominican convent and, above all, the Church of the Holy Trinity. The church built during XVI century by Maria Cardona and Susanna Gonzaga, it houses one of the most impressive lytic works in the territory: a XVI century bas-relief altarpiece in polychrome stone of about eight meters made by Giandomenico Gagini, which tells the story of Christ in 23 framed panels between candelabra and decorative reliefs, and surmounted by a pediment with the "Imago Trinitas" effigy, and closed down by a predella with the apostles. Other valuable artworks kept inside the church:

• XVII century "Misericordia di Dio" oil on canvas.
• "Madonna del Rosario" oil painting made by Raffaele Visalli during XVIII century.
• "Deposizione della Croce" oil on canvas made by Andrea D'Antoni on 1852.
• 1751 Baroque organ with Baroque register and "bird cage".